Aframomum vs plant genus

Aframomum and plant genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aframomum	Yes	No	No	No
plant genus	Yes	No	No	No

As nouns, plant genus is a hypernym of Aframomum; that is, plant genus is a word with a broader meaning than Aframomum:

Aframomum (noun)	plant genus (noun)
an African genus of plants of the family Zingiberaceae	a genus of plants